EP 2417701 B1 20180228 - OBTAINING A DESIRED NON-ZERO PHASE SHIFT USING FORWARD-BACKWARD FILTERING
Title (en)
OBTAINING A DESIRED NON-ZERO PHASE SHIFT USING FORWARD-BACKWARD FILTERING
Title (de)
HERBEIFÜHREN EINER GEWÜNSCHTEN VON NULL VERSCHIEDENEN PHASENVERSCHIEBUNG MITTELS VORWÄRTS-RÜCKWÄRTS-FILTERUNG
Title (fr)
OBTENTION D'UN DÉCALAGE DE PHASE NON-NUL DÉSIRÉ À BASE DE FILTRAGE AVANT-ARRIÈRE
Publication
Application
Priority
- US 2010029582 W 20100401
- US 16835009 P 20090410
Abstract (en)
[origin: WO2010117867A1] Forward and backward filters in cascade establish a specified phase shift in audio or video signals. The backward filter applies its filtering in a backward direction to impart a phase shift to its backward-filtered output that is a function of frequency. The forward filter applies its filtering in a forward direction to impart a phase shift to its forward-filtered output that has the specified phase shift relative the phase shift of the backward filter. Preferably, the two filters are recursive and are applied to signals that represent overlapping segments of the audio or video information. The overlap interval is used for filter initialization.
IPC 8 full level
H03H 17/08 (2006.01); G10L 19/00 (2013.01); H04S 3/02 (2006.01)
CPC (source: EP US)
H03H 17/08 (2013.01 - EP US); H04S 3/002 (2013.01 - EP US); G10L 19/008 (2013.01 - EP US); H04S 3/02 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
WO 2010117867 A1 20101014; AR 076239 A1 20110526; CN 102349235 A 20120208; CN 102349235 B 20150325; EP 2417701 A1 20120215; EP 2417701 B1 20180228; TW 201119219 A 20110601; TW I538394 B 20160611; US 2012019723 A1 20120126; US 8891708 B2 20141118
DOCDB simple family (application)
US 2010029582 W 20100401; AR P100101186 A 20100408; CN 201080011757 A 20100401; EP 10725921 A 20100401; TW 99109121 A 20100326; US 201013258338 A 20100401